[Firebird-docs] [FirebirdSQL/firebird-documentation] d04fdb: Use isql -?, which is a valid switch

[Mark R. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/FirebirdSQL/firebird-documentation
  Commit: d04fdbff87fb99ada09d91139d32e6066d5caac6
      https://github.com/FirebirdSQL/firebird-documentation/commit/d04fdbff87fb99ada09d91139d32e6066d5caac6
  Author: Mark Rotteveel <ma...@la...>
  Date:   2024-02-13 (Tue, 13 Feb 2024)

  Changed paths:
    M src/docs/asciidoc/en/firebirddocs/isql/firebird-isql.adoc

  Log Message:
  -----------
  Use isql -?, which is a valid switch